擅长:python、mysql、java
<p>如果您真的想使用<code>for</code>-循环:</p>
<pre><code>>>> board = []
>>> for i in range(3):
... board.append([])
... for j in range(3):
... board[i].append(0)
...
>>> board
[[0, 0, 0], [0, 0, 0], [0, 0, 0]]
</code></pre>
<p>但是Python让你更容易做到:</p>
<pre><code>>>> board = [[0]*3 for _ in range(3)]
>>> board
[[0, 0, 0], [0, 0, 0], [0, 0, 0]]
</code></pre>